ASTM D4654-87(2020) PDF

Scope: 1.1 This test method is intended for use in calculating the sulfate basicity of mineral tanned leather. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D4654-87(2020) Referenced Document

ASTM D2807 Standard Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation)
ASTM D4655 Standard Test Methods for Sulfates in Leather (Total, Neutral, and Combined Acid)*， 2023-09-15 Update